TY1250A

Forced-air-cooled very-high-power transmitting triode for major RF power applications. Approximately 100 kW plate dissipation and 15 kV capability support extremely high continuous transmitter output.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: -
Base pins: -
Nominal heater: 17.5 V / 196 A

Description

Forced-air-cooled very-high-power transmitting triode.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: -
Socket code: -
Base pins: -
Nominal heater voltage: 17.5 V
Nominal heater current: 196 A
Parallel heater voltage: -
Parallel heater current: -
Series capable: No

Terminal pinout

Electrical assignments shared by every tube using this base designation.

No verified pinout is recorded for this base designation.

Section ratings

1 physical section, each with unique specifications.

Section 1

Triode

X-ray radiationInterelectrode capacitances

Transconductance: 0.05 S
Amplification factor: 27
Max plate voltage: 15000 V
Max plate dissipation: 100000 W
Max cathode current: 20 A

Promoted from published Mullard absolute-maximum/limiting-value and characteristic tables; service-specific limits retained in parameter rows.

Source-dependent data

Operating conditions by source

Each block preserves the test conditions and published values from one reference. Values from different sources are intentionally kept separate.

Data set 01

1963 Mullard

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristic

HeaterOrFilamentVoltage
17.5 V
HeaterOrFilamentCurrent
196 A
Grid To Plate Capacitance
86 pF
Input Capacitance
116 pF
Output Capacitance
3.4 pF
Transconductance
50 mA/V
TransconductanceMaximum
92 mA/V
PlateVoltage=3kV;PlateCurrent=50A
Amplification Factor
27
Cooling
Forced air

Other

MaxPlateVoltage
15 kV
ClassB;AF
MaxPlateVoltage
13.5 kV
ClassB;Telephony
MaxPlateVoltage
10 kV
ClassC;Telephony
MaxCathodeCurrent
20 A
MaxPlateDissipation
100 kW
ClassB;Telephony
MaxGridCurrent
3 A
ClassC
MaxGridVoltageMagnitude
1.2 kV
ClassC